Gas-compressor.



No. 767,219, PATENTED AUG. 9, 1904.l C. FLOHR.

v GAS GOMPRESSOR.

APPLICATION FILED sIsPT.1z. 1903.

UNITED STATES i Patented August 9, 1904.

CARL FLOHR, OF- BERLIN, GERMANY.

GAS-COMPRESSOR.

SPECIFICATION forming part of Letters Patent No. 767,219, dated August 9, 1904.

Application filed September 12, 1903. Serial No. 172,901. (No model.)

To all zul/110711, it muy cm1/cern:

Be it known that I, CARL FLOHR, a citizen of the Empire of Germany, residing at Berlin, in the Empire of Germany, have invented a new and useful Gas-Compressor, of which the following is a speciiication.

My invention relates to improvements in pressure-regulators for gas-compressors of the kind described in the United States Patent No. 669,140 of March 5, 1901, in order to obtain the best possible results from the said apparatus; and the objects of my improvement are, first, to replace the single-acting pump referred to in the said patent by a double-acting pump serving as a gas-compressor; second, to replace thel means mentioned therein for locking and releasing' the suction-valve cone by one or two rocking return disk valves placed Ain a separate channel which connects the two cylinder ends of the double-acting pump, and, third, to provide means for connecting the one or two rocking return disk valves with the float. I attain these objects by the arrangement illustrated in the accompanying drawings, in which- Figure l is an elevation of the double-acting' gas-compressor in combination with the compressed-gas-storage vessel and the pressureregulator, a part being shown in section. Fig. 2 is on the left part a plan and on the right part a horizontal central sectional view of the double-acting gas-compressor. Fig. 3 is a horizontal longitudinal section through the center line of a modiiied double-acting gascompressor, the piston and the covers being omitted. Fig. 4 is a cross-section through a rocking return disk valve proper on the line A B in Fig. 2 on an enlarged scale, and Fig. 5 is a similar cross-section through the seat of the rocking return disk valve on an enlarged scale.

Similar letters oi' reference refer to similar parts throughout the several views.

The double acting gas compressor a is driven in any known manner-for example, from acrank-pin Z, as shownand is arranged for sucking the gas from a convenient main (not shown) through the two suction-valves p and q, compressing the gas and forcing it through the two delivery-Valves p and q/ and the connecting-tube r into the storage vessel 7L. The latter is provided with a partition-Wall s and a tube i, through which the glycerin or other liquid is caused by the pressure of the compressed gas to rise from the lower compartment into the upper compartment, where a float g is disposed. The compressed gas is conducted from the storage vessel /t through a main a to the places of consumption. The arrangement described so far, with the exception of the double-acting gas-compressor, is substantially the same as that described in the above-mentioned patent.

The cylinder a of the double-acting gascompressor is provided with a lateral channel for connecting the two cylinder ends. At each extremity of this channel a slightlyconical valve-seat It is litted into the cylinder a and secured by a cover m. This seat zhas two opposed sector-shaped passages an, Fig. 5, and a central hole 7c', in which the spindle CZ of a rocking disk valve c is mounted to turn. This valve has equally two opposed sectorshaped apertures o 0, which can register with those an of the seat k. The seat c has, moreover, three lateral passages 7a2, through which the channel b can communicate with the cylinder on the disk valve c being opened. A bell-crank lever e is fastened on the spindle d of the left disk valve c and a vertical lever e on the spindle l of the right disk valve c. The two levers c e' are pivotally connected with each other by a rod f and with the float g by means of a rod e', `a two-armed lever o on a suitable support w, and a rod x. The downward movement of the iioat g is limited in any known manner. (Not shown.)

The operation of the gas-compressor is as follows: Assuming the storage vessel L to be empty of compressed gas, then the ioat g will occupy its lowest position While hanging on the rod a', and the two disk valves c c will be closed. On starting the gas-compressor it will force compressed gas into the storage vessel t, where the compressed gas will occupy the annular space between the inner Wall and the tube t and gradually drive downward the level of the glycerin or other liquid while raising in proportion the level in the upper compartment. When the level reaches IOO the float 17, the latter will commence to rise and to open the two disk valves c c--zl e., to uncover the passages a a in the seats 7c. The disk valves c c are then rotated by the rod to a greater or less extent, according' to the rise of the lioat, in such a manner that the apertures ou or' these valves coincide either wholly or in part with the passages a n in the seats. By this means the two sides of the cylinder are placed in direct communication by way of the channel and the quantities of gas sucked by the gas-compressor through thc valves p and @alternately are respectively either simply transferred from the one cylinder side to the other one without getting' into the storage vessel L or they are partly forced alternately through the delivery-valves jf and q into the storage vessel z, and partly returned to the other cylinder side. It will be evident that thereby the variations of the level in the upper compartment of the storage vessel /L will necessarily be reduced in proportion. lV hen the two return disk valves c c are completely open, no gas will be forced by the gas-compressor into the storage vessel L, and when the valves are partly open only that portion of the quantity of the gas sucked in by the compressor will reach the storage vessel /1/ which is not able to pass through the disk valves c c. In this manner the liquid in the storage vessel is practically maintained at a constant heig'ht, and therefore it regulates the pressure of the gas pumped into the storage vessel.

lf desired, only one return disk valve c may be employed, be it in the middle of the channel b or at one extremity thereof, as shown in Fig. 3. ln this case the connecting-rod f is oi' course unnecessary, and the bell-crank lever e is replaced by a simple lever which is connected with the rod c'. However, the employment of the single return disk valve is not so advantageous, as the noxious space of the compressor is thereby increased.

By means of this novel arrangement the advantage as compared with the construction described in the said prior patent is obtained that with the smallest displacement of the suitably-adjusted Heat ,the effect of the gas-compressor is caused to correspond with the gas consumption, as with a small aperture or' the return disk valves a portion of the gas sucked in passes from one side or' the cylinder to the other, while the other portion of the compressed gas corresponding to the gas consumption is forced into the storage vessel, so that even the slight variations of the pressure which occur with the apparatus in accordance with the prior patent are completely obviated. A further advantage consists in the fact that even with a' small consumption of the gas the compressor acts continuously and 'only runs idle when there is no consumption of gas whatever.

The whole apparatus described so far can be varied in many respects without deviating from the spirit ot' my invention.

NV hat 1 claim as my invention, and desire to secure by Letters Patent, is

l. The combination with a double-acting gas-compressor comprising a cylinder with a channel connecting' its two ends, or' a rocking disk valve in said channel and adapted for opening' and closing this channel, a compressed-gas-storagc vessel partly tilled with a Huid and divided by a partition-wall into two compartments one above the other and provided with a communicating tube reaching' 'from the partition-wall down to a point above the bottom, a tube'connecting the lower compartment of said compressed-gas-storage vessel with the delivery oi' said double-acting' g'as-compressor, a 'lioat in the upper compartment otl said compressed-gasstorag'e vessel, and means for positively connecting said float with said rocking disk valve, so that the latter is more or less opened, when said iioat is moved.

2. The combination with a gas source, ot a double-acting gas-compressor comprising' a cylinder with a channel connecting' its two ends, a tube connecting said gas source with the inlet of said double-acting' gas-compressor, a compresscd-gas-storag'e vessel partly iilled with a fluid and divided by a partition-wall into two compartments one above the other and provided with a .communicating tube reaching from the partition-wall down to a point above the bottom, a tube connecting' the lower compartment of said compressed-gasstorage vessel with the delivery oi' said double-acting gas-compressor, a tube connecting the lower compartment oi said compressedgas-storage vessel with the places of consumption, a rocking disk valve in said channel in said double-acting gascompressor and adapted for opening and closing' this channel, a loat in the upper compartment otl said compressed-gas-sto rage vessel, and means for positively connecting said rocking disk valve with said iioat, so that said channel is more or less opened, when said float is moved.

3. The combination with a gas source, ot a double-acting gas-compressor comprising a cylinder with a channel connecting its two ends, a tube connecting' said gas source with the inlet of said double-acting' gas-compressor, a compressed-gas-storage vessel partly lilled with a iiuid and divided by a partition-wall into two compartments one above the other and provided with a communicating tube reaching from the partition-wall down to apoint above the bottom, a tube connecting said compressedgas-storage vessel beneath its partition-wall with the delivery of said double-acting gascompressor,atubeconnectingsaidcompressedgas-storage vessel beneath its partition-wall with the places of consumption, a rocking disk valve mounted to turn in said channel in said double-acting gas-compressor and adapt- IOO TIO

od for opening and closing thisl channel, a lever secured on the spindle of said rocking disk valve, a oat in the upper compartment of said compressed -gasestorage vessel, and means for positively connecting said lever with said ioat. so that said rocking disk valve is more or less opened, when said oat is moved.

4. The combination with a gas source, of a double-acting gas-compressor comprising a cylinder with a channel connecting its two ends, a tube connecting said gas source with the inlet of said double-acting gas-compressor, a compressed-gas-storage vessel partly filled with a luid and divided by a partition-wall into two compartments one above the other and provided with a communicating' tube reaching from the partition-wall down to a point above the bottom,a tube connecting said compressedgasstorage vessel beneath its partition-Wall with the delivery of said double-acting gascompressor, a tube connecting said compressed-gas-storage vessel beneath its partition-wall with the places of consumption, two rocking disk valves mounted to turn in the extremities of said channel in said doubleacting gas-compressor and adapted for simultaneously opening and closing this channel, two levers secured on the spindles of said two rocking disk valves, a ioat in the upper compartment of said compressed-gas-storage vessel, and means for positively connecting said two levers with said float, so that said two rocking disk valves are more or less opened, when said loat is moved.

5. The combination with a gas source, of a double-acting gas-compressor comprising a cylinder Lwith a channel connecting its two ends, a tube connecting said gas source with the inlet of said double-acting gas-compressor, a compressed-gas-storage vessel partly filled with a fluid and divided by a partition-'wall into two compartments one above the other and provided with a communicating tube reaching from the partition-wall down to a point above the bot-tom, a tube connecting said compressed-gas-storage vessel beneath its partition-wall with the delivery of said double-acting gas-compressor, a tube connecting said compressed-gas-storage vessel beneath its partition-wall with the places of consumption,

two rocking disk valves mounted to turn in the extremities of said channel in said double-acting gas-compressor and adapted for simultaneously opening and closing this channel, two levers secured on the spindles of said two rocking disk valves, a rod pivotally connecting said two levers, an arm rigidly connected with one of said two levers, a float in the upper compartment of said compressedgas-storage vessel, a two-armed lever mounted to turn on said compressed-gas-storage vessel, a rod pivotally connecting the one arm of said two-armed lever with said iioat, and a rod pivotally connecting the other arm of said two-armed lever with said arm.

ln testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CARL FLOHR.

Vitnesses:

WOLDEMAR HAUPT, n WILLIAM MAYNER. 

